3440420 has 12 divisors (see below), whose sum is σ = 7224924. Its totient is φ = 1376160.

The previous prime is 3440419. The next prime is 3440429. The reversal of 3440420 is 240443.

It can be written as a sum of positive squares in 2 ways, for example, as 2579236 + 861184 = 1606^2 + 928^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3440429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85991 + ... + 86030.

It is an arithmetic number, because the mean of its divisors is an integer number (602077).

Almost surely, 2^3440420 is an apocalyptic number.

It is an amenable number.

3440420 is an abundant number, since it is smaller than the sum of its proper divisors (3784504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3440420 is a wasteful number, since it uses less digits than its factorization.

3440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172030 (or 172028 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 3440420 is about 1854.8369200552. The cubic root of 3440420 is about 150.9629896283.

Adding to 3440420 its reverse (240443), we get a palindrome (3680863).

The spelling of 3440420 in words is "three million, four hundred forty thousand, four hundred twenty".